When to use a semicolon before a conjunction

Free grammar tips, lessons and tests

Recommended purchases

This site: Grammar Monster on line Daily tips with Grammar Monster's gadget Daily tips with Grammar Monster on Twitter  The best grammar reference books Grammar Monster off line The only grammar checker we'll endorse
Common grammar errors
Easily confused words
Grammar terms & definitions
Grammar tests
Grammar lessons
Search this site


 Home

Search
 

Glossary
of Terms

Common
Errors

FAQs

Grammar
Chat

Download

Grammar
Checker


 
When to use a semicolon before a conjunction.
 


Semicolon before And

As covered in the lesson Commas before Conjunctions, when a conjunction (e.g., and, but, or) merges two simple sentences into one, it should be preceded by a comma. However, if one (or both) of the sentences already contains a comma (or commas), then a semicolon can be used instead. 

Examples:

In the '60s, there were dozens of buzzards along the 7-mile trek; but, due to the decline in vermin, only 2 adults live in the area at present.
("In the '60s, there were dozens of buzzards along the 7-mile trek." + "Due to the decline in vermin, only 2 adults live in the area at present." These two
sentences both contain commas and are merged into one sentence 
using the conjunction "but". In this role, "but" can be preceded by a semicolon.)
(A comma can also be used and is more common.)

Mark, Dawn and Sally adore boiled spare ribs; but Julia, a staunch vegetarian, leaves the room when they are on the menu.  
(Semicolon before "but" - a comma can also be used and is more common.)
COMPOUND SENTENCE? 

A sentence made up of two simple sentences is called a 'compound sentence'. The conjunction that joins the two halves of a compound sentence should be preceded by a comma or possible a semicolon.
Associated lessons:
 
What are conjunctions?
Conjunctions and commas
Using semicolons before conjunctions (and, or, but, etc.)
Using semicolons before transitional phrases (e.g. however)
Using semicolons in lists
Using semicolons to extend a sentence
List of easily confused words
 
 

Grammar Monster © | Copyright Registration Number: 226604 | All rights reserved